Core-retaining device.



M. D. KUHLKE.

CORE RETMNIHG DEVICE.

' APPUQAHQN msn FEB. i4, 1914.

1,1%(),045 'Patented May 18, 1915.

` mobile tires.

jTO'aZZ 'whom 'it may concern.'

MARTIN-D. KUHLKE, OFAKRON, i

Be it known that LMARTIN D. KUHLKE, a citizen of the United` States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful Improvement in Core-Retaining lDevices, of which the following is 'a full, clear,

'and exact. descriptionv reference being'had to the accompanying drawings.

This invention' relates to cores for tiresy and more particularly to the locking means for securing the core segments in operative relation to each other'to form a complete core.

It is the general objectof the invention to 'provide 'a core of the* type referred to with an eilicient form of locking device; one which can lbe conveniently applied to and removed from'the segments; and one which is simple of construction, economical of production,

butextremely efficient in operation.

I accomplish the foregoing objects by the constructionillustrated in the drawings forming part hereof -wherein- Figure r1 represents a side elevation of a core having my locking-device applied theretoi; Fig.' 2 an enlarged*` transverse sectional Viewv through the core, 'showing my. locln'ng device in position.; Fig' an enlarged detail in elevation of the locking ring with 4its connecting means; and Fig 4 a sectional detail of the ring and device shown in Fig. 3.

Describing by vreference characters the various parts illustrated in the drawings, 1; 2, 3, and 4. denote the segments of a core such asis employed in the-manufacture ofauto- The construction .and arrangement of the segmentsl (with the exceptions to be noted hereinafter) are ordinary. Each.`

core segment comprises-an outer portion 5 and aninner shouldered portion 6, the outer portion being preferably hollow for cheapness and lightness of construction. One of theilateral faces of each shouldered portion 6.1is provided with an arcuate recess @which is preferably rectangular in section. .The arcuatet recesses jointly forman annular rev. f cess which extends 'continuously around the core segments, .said -annular recess being adapted to receive the locking rlng 8. {This locking ring is a splitiring iand, when; 1n-

serted in itsl annular recessY or seat, jthe `endsk will not 'be in exact' conta@ but will be spaced CORE-RETAINING DEVICE. i

l Specification 'of Letters Patent.`

against the inner .wall of the annular ,l The bolt, with-.'ts iianged head,f constitutes core-and serves to retain the,"ning.a

a short distance apart, as shownl, r i.ffmmv."

and the segments united into' a unitaryy core 'structure by contracting theringl'to c the inner periphery thereof tobiiidfagainst the corresponding wall ofthe annulanrecess y Patented Mayiafre'r appucationfnedrebruary14,1914. seriainalsiaea'f,I y

The ring is convenientlylsecuredfin'lplace extending around the lcore1segments.y This action is conveniently secured through' aibolt or stud 10 having a reduced threaded end; 11 which is adapted to 'engage a threaded "bore 12 in theshouldered portion 6'l ofltllle core'.

as'shown at 13, to receive the bodyfof the .65 The opposed ends of the ring 8 '-arerecessed. if'

bolt 10, suiiicient clearance being' provided between the wallof each recess andthebody ofthe bolt or stud to permit the ends fofthe ring to be broughty intoV as close'proximityas 'the inner wall ofthe annular recess willpr-' mit.A For the' purpose" of contracting the ring to clamp the segments together and' zretain `the ring inplace, the bolt is provided with ahead vlli'having an annular peripheral flange 15 Iprojecting lat substantially right angles` from the head. The outer flateral face 16 of this fiange isl preferably cylindrical While'the inner face 17 is beveled erin` clined. "The flange 15 is adapted to enter semicircular` recesses 18 in the opposed end portions of the ring These: recesses are of substantially thesame shape Las the Harige 15, being provided each, with an inclined wall-,1.9 which 'is adapted to beeng'aged` by the inclined surface N17 of the iangewhereby, on setting up -the boltv or studQlO (as. by means of a socket wrench applied tothe angular socket 14? inthe head), the opposed ends of the locking ring are,1novedtoward 1 each other through the .wedging action and the inner periphery ofthe ring is forcedinto binding engagement with the corresponding peripheral wall of the annulanrecessextending around the coregsegmentaA ltglw'ill be',V z

evident that'the bolt or stud/10, with its,"

`flanged head,.serves, by its adjustment'to,

bring the ends of the splitl ring towardieach' other, thereby .to .contract the spli a'4 ring-Contracting 'idevCe-Whihpi elsa a",

th the ace clamping device, which is associated within 'its re,cess. fordei'.l

the core, it is necessary only to apply a Wrench to the socket v14a and unscrew the ing a'plura'lity of segments each yhaving a wall, said Walls forming jointly a complete circular wall, `of a split ring adapted to engage said Wall with its inner peripheral edge,'and,means connected to one of the core segm nts'and adjustable with respect thereto an.y adapted by such adjustment to bring the ends of the ring-into closer relation to eachother and to clamp the ring in place against the wall. j 2. *The combination, with a core comprising a pluralityof segments each having an arcuate recesstherein, said'recesses forming jointly a complete annular recess, of a split ring in saidnnular recess, and means associated with one of the core segments andadjustable at right angles.to' t he plane of said rlngand adapted to engage opposed portions of saidd'ring and, by such adjustment, to move sald portions toward each other.

3. The combination, with a core comprising a plurality of segments each having an arcuate recess therein, said recesses forming jointly a complete annular recess, of a split ring in said annular recess, said ring having near each end portion thereof a recess provided with an inclined surface, yand a clamping device associated with one of said segments and adjustable transversely with respect thereto and having inclined surfaces coperating with the inclined surfaces of the ring whereby to vary the distance between the ends of the ring.

4. The combination, with a core comprising a plurality of segments each having an arcuate recess therein, said recesses formingr jointly .a complete annular recess, of a split ring in said annular recess, said ring having near each end portion thereof an inclined surface, and a clamping device associated with one of said segrfwnts and adjustable transversely with respect to the ring and having inclined surfaces ceperatnag` with the inclined surfaces of the zingiwhere by to contract the ring. y

5. The combination, with a core compris` ing 'a plurality of segments each having an arcuate recess therein. said recesses forming jointly a complete annular recess. of a split yring in said annular recess, said ring having in each end portion. a recess the face whereof which is nearest the end of such portion being inclined teward such end, and a stud adjustable transversely with respect to the ends of the ring and having an annular fiange adapted 'lo enter the said recesses, said iange having an inclined surface adapted to coperate with the inclined surfacesl of the recesswto draw the ends of thering in closer prxjiiinityto eachother.

6. The-combination, with` atcore comprislng a plurality of,-segments each having an arcuate recess therein, said recesses forming jointly a complete annular recess, of a split ring 1n said annular recess, said ring having in each end portion a' substantially seml- Circular recess the face whereof' which is nearest the end of such portion being inclined toward suchend, a stud or bolt having a thread and theopposed ends of the ring being provided l"each with a recess for the passage ofy said stud or bolt, a head on said stud or bolt having an annular flange adapted to enterthe Asemi-circular recesses in the ring, the surface of the flange nearest the stud. or b olt; y being inclined and adapted to engagef -`tln inclined surfaces of the recesses whereby/on `threading the stud into the appropriate core segment, the ring is contracted through vthe enga-gement of the inclined surface of; the flange with the in-` clined surfaces of the recesses.

7. The combination, With a plurality of core segments each" having an arcuate recess, said recesses forming jointly a complete annular recess, lof a split ring in said annular recess, andi means carried by one of said segments and movable transversely of said ring and engaging said ring whereby, through such transverse movement, the ends of said ring are b'ropght toward each other, therebv to clamntlie core segments together.

8. The combination," with a' plurality of core segments each lla-ving an arcuate wall, said walls forming jointlyY a complete circular wall, of a split ring surrounding said wall, and means adjustably carried by one of said ysegments and adapted toengage an end of the ring'qand, by its adjustment, simultaneouslytobring one end of the ring toward the other vt'o contract the ring and to clamp the ring inplace `about ,said wall. 9. The combination, with a pluralityl of core segments each having aniarcuate recess, said recessesjfor'ming jointly a complete annular recess," of a split ring in said annularrecess, the end portions of said ring beingprovided each with an inclined surface, and a bolt or stud lthreaded into one of the core segments between the opposed ends of the ring, said bolt V.or stud having a head adapted to extend across the endsof the ring yand to engage thev inclined surfaces thereof and, by its adjustment, to vary the distance between the'ends of the ring, lWhereby to clamp the segments together.'

10. The'combination, with a pluralityof core segments each ,having an arcuate Wall, said walls forming jointly a complete c1rcular wall, of asplit ring surrounding said wall, the end portions of said ring being provided each With an inclined surface, and

iti

a bolt Aor stud threaded into one of the core segments between the opposed ends of the ring, said bolt or stud having a head adapted to extend across the ends of the ring and v 5 /to engage the inclined surfaces thereotand,

by its adjustment, to vary the distance between the ends of the rings, thereby to clamp the segments together.

11. The combination, with a plurality of 10A core segments each having an arcuate wall,

said walls forming jointly a complete cir-v cular wall extending around thecore, ,of a

split ring` coperating with said wall and adapted to fit thereagainst, a device carried by one of said segments and adjustable with 15 respect thereto and adapted to engage said ring and, by its adjustment, to vary the distance betweenv the ends of said ring and to force the ring into engagement with the wail, thereby to lock the segments together. 20

t, In testimony whereof, I hereunto aiix my signature in the presence of two witnesses. MARTIN D. KUHLKE.

Witnesses:

AUT. M. OLIVER, RALPrI SPRAGUE. 

